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Name the compound which is used to obtai...

Name the compound which is used to obtain fluorine gas on electrolysis. At which electrode does `F_2` appears?

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The correct Answer is:
Fused anhydrous potassium hydrogen fluoride `(KHF_(2))`
`CaF_(2)+H_(2)SO_(4)toCaSO_(4)+2HF ; KF + HFtoK[HF_(2)] overset("electrolysis")toH_(2)+F_(2)`
On Electrolysis : Cathode : `2H^(+) + 2e^(-)toH_(2)(g)`
Anode : `2F^(-)toF_(2) + 2e^(-)`
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